CN211167280U - Dead-angle-free transmission device and bicycle - Google Patents
Dead-angle-free transmission device and bicycle Download PDFInfo
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- CN211167280U CN211167280U CN201922049251.XU CN201922049251U CN211167280U CN 211167280 U CN211167280 U CN 211167280U CN 201922049251 U CN201922049251 U CN 201922049251U CN 211167280 U CN211167280 U CN 211167280U
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Abstract
The utility model discloses a no dead angle transmission and bicycle, including box, first drive assembly, second drive assembly, drive assembly and output assembly, the box is equipped with the installation cavity, and first drive assembly is equipped with first pedal, first front axle and first drive wheel, and rotatable the installing in the installation cavity of first front axle and one end stretch out outside the installation cavity. This no dead angle transmission is at the transmission in-process, and the drive ratio periodic variation of first drive wheel and second drive wheel, in half transmission cycle, the angle that first pedal rotated is not the same with the angle that the second pedal rotated to when making first pedal be located the top, the second pedal is located the position outside the lower extreme, avoids appearing the transmission dead angle, has improved the convenience of using.
Description
Technical Field
The utility model relates to a bicycle transmission technical field, in particular to no dead angle transmission and bicycle.
Background
The transmission ratio of the existing bicycle is usually constant or is instantly changed only when the gear is shifted, so that the rotation of two pedals is constant speed in the running process of the bicycle, when one pedal is positioned at the uppermost end, the other pedal is positioned at the lowermost end, a transmission dead angle is formed, a user can not do work on the pedals when forcibly pedaling down, and the use is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a no dead angle transmission, it can realize no dead angle transmission, and it is more convenient to use.
The utility model discloses still provide a bicycle of using above-mentioned no dead angle transmission.
According to the utility model discloses a no dead angle transmission device of first aspect embodiment, including the box, be equipped with the installation cavity; the first driving assembly is provided with a first pedal, a first front shaft and a first driving wheel, the first front shaft is rotatably arranged in the mounting cavity, one end of the first front shaft extends out of the mounting cavity, the first driving wheel is positioned in the mounting cavity and fixed on the first front shaft, and the first pedal is positioned outside the mounting cavity and fixedly connected with the end part of the first front shaft; the second driving assembly is provided with a second pedal, a second front shaft and a second driving wheel, the second front shaft is rotatably arranged in the mounting cavity, one end of the second front shaft extends out of the mounting cavity, the second driving wheel is positioned in the mounting cavity and fixed on the second front shaft, and the second pedal is positioned outside the mounting cavity and fixedly connected with the end part of the second front shaft; the transmission assembly is provided with a middle shaft, a first transmission wheel, a second transmission wheel and an output wheel, the middle shaft is rotatably arranged in the installation cavity, the first transmission wheel, the second transmission wheel and the output wheel are respectively and fixedly arranged on the middle shaft, and the first driving wheel and the first transmission wheel are in a variable transmission ratio iaThe second driving wheel is in transmission connection with the second driving wheel in a variable transmission ratio ibDrive connection, said iaAnd said ibHas the same trend of change, iaAnd said ibThe average transmission ratio of the transmission mechanism in one transmission period is 1; the output assembly is provided with an output shaft, a driven wheel and a chain wheel, the output shaft is rotatably arranged in the mounting cavity, the driven wheel and the chain wheel are respectively and fixedly arranged on the output shaft, and the driven wheel is in transmission connection with the output wheel.
According to the utility model discloses no dead angle transmission has following beneficial effect at least: this no dead angle transmission is at the transmission in-process, and the drive ratio periodic variation of first drive wheel and second drive wheel, in half transmission cycle, the angle that first pedal rotated is not the same with the angle that the second pedal rotated to when making first pedal be located the top, the second pedal is located the position outside the lower extreme, avoids appearing the transmission dead angle, has improved the convenience of using.
According to some embodiments of the invention, the first drive wheel and the first drive wheel are two elliptical gears of the same structure, two the elliptical gears engage the transmission.
According to some embodiments of the invention, the first drive wheel and the first transmission wheel are two oval gears of the same structure, two of the oval gears are in meshing transmission.
According to some embodiments of the invention, one of the first drive wheel and the first drive wheel is an eccentric circular gear and the other is a non-circular gear conjugated with the eccentric circular gear, the eccentric circular gear and the non-circular gear are in meshing transmission.
According to some embodiments of the invention, the second drive wheel and the second transmission wheel have the same structure as the first drive wheel and the first transmission wheel.
According to the utility model discloses a bicycle of second aspect embodiment, it includes the no dead angle transmission of above-mentioned embodiment.
According to the utility model discloses bicycle has following beneficial effect at least: the bicycle has the advantages that the phenomenon of transmission dead angles can not occur in the use process, and the use convenience is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a perspective view of a dead-angle-free transmission according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a dead-corner-free transmission according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 5 is a schematic view of a first pedaling rotation angle a;
fig. 6 is a schematic view of a second pedal rotation angle b.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1 to 4, a dead-angle-free transmission device according to an embodiment of the present invention includes a box 100, a first driving assembly 200, a second driving assembly 300, a transmission assembly 400, and an output assembly 500. The case 100 is provided with a mounting cavity 110, and the mounting cavity 110 is used for mounting corresponding parts. The first driving assembly 200 is provided with a first pedal 210, a first front shaft 220 and a first driving wheel 230, the first front shaft 220 is rotatably installed in the installation cavity 110, one end of the first front shaft extends out of the installation cavity 110, and the first front shaft can be installed through a rolling bearing, etc., the first driving wheel 230 is located in the installation cavity 110 and fixed on the first front shaft 220, and the first pedal 210 is located outside the installation cavity 110 and fixedly connected with the end of the first front shaft 220. The second driving assembly 300 is provided with a second pedal 310, a second front shaft 320 and a second driving wheel 330, the second front shaft 320 is rotatably installed in the installation cavity 110, one end of the second front shaft 320 extends out of the installation cavity 110, and the second front shaft can be installed through a rolling bearing, etc., the second driving wheel 330 is located in the installation cavity 110 and fixed on the second front shaft 320, and the second pedal 310 is located outside the installation cavity 110 and fixedly connected with the end of the second front shaft 320. The transmission assembly 400 is provided with a middle shaft 410, a first transmission wheel 420, a second transmission wheel 430 and an output wheel 440, the middle shaft 410 is rotatably installed in the installation cavity 110 and can be installed through a rolling bearing, etc., the first transmission wheel 420, the second transmission wheel 430 and the output wheel 440 are respectively and fixedly installed on the middle shaft 410, and the first driving wheel 230 and the first transmission wheel 420 have a variable transmission ratio iaIn driving connection, the second driving wheel 430 and the second driving wheel 330 are in variable transmission ratio ibDrive connection, iaAnd ibHave the same trend of change iaAnd ibThe average transmission ratio is 1 in one transmission cycle. The output assembly 500 is provided with an output shaft 510, a driven wheel 520 and a chain wheel 530, the output shaft 510 is rotatably installed in the installation cavity 110, and can be installed through a rolling bearing, etc., the driven wheel 520 and the chain wheel 530 are respectively and fixedly installed on the output shaft 510, the driven wheel 520 is in transmission connection with the output wheel 440, and the chain wheel 530 is used for driving the rear wheel of the bicycle to rotate.
In the transmission process of the dead-corner-free transmission device, the transmission ratio of the first driving wheel 230, the first driving wheel 420, the second driving wheel 430 and the second driving wheel 330 is periodically changed, and in a half transmission period, the rotating angle of the first pedal 210 is different from the rotating angle of the second pedal 310, so that when the first pedal 210 is positioned at the top, the second pedal 310 is positioned at the position outside the bottom, the occurrence of transmission dead corners is avoided, and the use convenience is improved.
Referring to fig. 3 and 4, in some embodiments, the first driving wheel 230 and the first driving wheel 420 are two elliptical gears with the same structure, and the two elliptical gears are meshed for transmission, so that variable transmission ratio transmission can be realized.
In some embodiments, the first driving wheel 230 and the first driving wheel 420 are two oval gears with the same structure, and the two oval gears are meshed for transmission, so that variable transmission ratio transmission can be realized.
In some embodiments, one of the first driving wheel 230 and the first driving wheel 420 is an eccentric circular gear, and the other is a non-circular gear conjugated with the eccentric circular gear, and the eccentric circular gear is meshed with the non-circular gear for transmission, so that variable transmission ratio transmission can be realized.
Of course, for convenience of manufacture and reduction of manufacturing cost, the second driving wheel 330 and the second driving wheel 430 have the same structure as the first driving wheel 230 and the first driving wheel 420.
Referring to fig. 5 and 6, the first driving wheel 230 and the first driving wheel 420 are two elliptical gears having the same structure, and the second driving wheel 330 and the second driving wheel 430 are also two elliptical gears having the same structure, wherein the installation angles of the first driving wheel 420 and the second driving wheel 430 are different by 180 degrees, so that i can be implementedaAnd ibThe same trend of change. When the user steps on the first pedal 210 to make the first front axle 220 drive the first driving wheel 230 to rotate clockwise by an angle a, a is less than 180 degrees, at this time, the first driving wheel 230 drives the first driving wheel 420 to rotate counterclockwise by an angle 180 degrees, ia is less than 1, meanwhile, the middle axle 410 rotates counterclockwise by 180 degrees along with the first driving wheel 420, and the second driving wheel 430 rotates counterclockwise by 180 degrees along with the middle axle 410The second driving wheel 430 drives the second driving wheel 330 to rotate clockwise by an angle b, b is greater than 180 degrees, at this time ib is smaller than 1, and the second front axle 320 rotates clockwise by an angle b along with the second driving wheel 330, that is, the second pedal 310 rotates clockwise by an angle b. Therefore, when the first pedal 210 is pressed to rotate from the uppermost end to approach the lowermost end, the second pedal 310 rotates forward from the position where the lowermost end rotates to exceed the uppermost end, thereby avoiding the formation of dead transmission corners.
Meanwhile, the connecting rod 211 of the first pedal 210 may be disposed parallel to the long axis of the first driving wheel 230 and in a direction from the focal point of the first front axle 220 to the other focal point, and the connecting rod of the second pedal 310 may be disposed parallel to the long axis of the second driving wheel 330 and in a direction from the focal point of the second front axle 320 to the other focal point. Through the arrangement, the transmission ratio of the first pedal 210 or the second pedal 310 is the largest when the force position is vertically moved, and the transmission ratio gradually reaches the smallest when the force position is horizontally moved, so that efficient work can be performed in the whole force moving process.
The utility model discloses a bicycle of second aspect embodiment, its no dead angle transmission who uses above-mentioned embodiment to can make the bicycle can not appear the phenomenon at transmission dead angle in the use, improve the convenience of using.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (6)
1. No dead angle transmission, its characterized in that includes:
the box body is provided with a mounting cavity;
the first driving assembly is provided with a first pedal, a first front shaft and a first driving wheel, the first front shaft is rotatably arranged in the mounting cavity, one end of the first front shaft extends out of the mounting cavity, the first driving wheel is positioned in the mounting cavity and fixed on the first front shaft, and the first pedal is positioned outside the mounting cavity and fixedly connected with the end part of the first front shaft;
the second driving assembly is provided with a second pedal, a second front shaft and a second driving wheel, the second front shaft is rotatably arranged in the mounting cavity, one end of the second front shaft extends out of the mounting cavity, the second driving wheel is positioned in the mounting cavity and fixed on the second front shaft, and the second pedal is positioned outside the mounting cavity and fixedly connected with the end part of the second front shaft;
the transmission assembly is provided with a middle shaft, a first transmission wheel, a second transmission wheel and an output wheel, the middle shaft is rotatably arranged in the installation cavity, the first transmission wheel, the second transmission wheel and the output wheel are respectively and fixedly arranged on the middle shaft, and the first driving wheel and the first transmission wheel are in a variable transmission ratio iaThe second driving wheel is in transmission connection with the second driving wheel in a variable transmission ratio ibDrive connection, said iaAnd said ibHas the same trend of change, iaAnd said ibThe average transmission ratio of the transmission mechanism in one transmission period is 1;
the output assembly is provided with an output shaft, a driven wheel and a chain wheel, the output shaft is rotatably arranged in the mounting cavity, the driven wheel and the chain wheel are respectively and fixedly arranged on the output shaft, and the driven wheel is in transmission connection with the output wheel.
2. The dead-corner-free transmission device according to claim 1, wherein: the first driving wheel and the first driving wheel are two elliptic gears with the same structure, and the two elliptic gears are in meshing transmission.
3. The dead-corner-free transmission device according to claim 1, wherein: the first driving wheel and the first driving wheel are two oval gears with the same structure, and the two oval gears are in meshing transmission.
4. The dead-corner-free transmission device according to claim 1, wherein: one of the first driving wheel and the first driving wheel is an eccentric circular gear, the other one of the first driving wheel and the first driving wheel is a non-circular gear conjugated with the eccentric circular gear, and the eccentric circular gear is in meshing transmission with the non-circular gear.
5. The dead-corner-free transmission device according to any one of claims 1 to 4, wherein: the structures of the second driving wheel and the second transmission wheel are the same as those of the first driving wheel and the first transmission wheel.
6. Bicycle, its characterized in that: comprising a dead-corner-free transmission according to any of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922049251.XU CN211167280U (en) | 2019-11-22 | 2019-11-22 | Dead-angle-free transmission device and bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922049251.XU CN211167280U (en) | 2019-11-22 | 2019-11-22 | Dead-angle-free transmission device and bicycle |
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| Publication Number | Publication Date |
|---|---|
| CN211167280U true CN211167280U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922049251.XU Active CN211167280U (en) | 2019-11-22 | 2019-11-22 | Dead-angle-free transmission device and bicycle |
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| Country | Link |
|---|---|
| CN (1) | CN211167280U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114212175A (en) * | 2021-12-27 | 2022-03-22 | 彭连林 | Method for overcoming dead point of bicycle |
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2019
- 2019-11-22 CN CN201922049251.XU patent/CN211167280U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114212175A (en) * | 2021-12-27 | 2022-03-22 | 彭连林 | Method for overcoming dead point of bicycle |
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